dt-bindings: power: add power-domain header for MediaTek MT8365 SoC

Add power-domain header for MediaTek MT8365 SoC copied from Linux
source code tag v6.7-rc2.
(commit a1571f1f333c2fced076f0d54ed771d1838d827f)

Signed-off-by: Julien Masson <jmasson@baylibre.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index ec5311c..3b13f26 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -412,6 +412,7 @@
 F:	drivers/net/mtk_eth.h
 F:	drivers/reset/reset-mediatek.c
 F:	include/dt-bindings/clock/mediatek,*
+F:	include/dt-bindings/power/mediatek,*
 F:	tools/mtk_image.c
 F:	tools/mtk_image.h
 F:	tools/mtk_nand_headers.c